Sttjd-bolt wrench



C. KELLER.

STUD BOLT WRENCH.

APPLICATIDN FILED JULY n. 1918.

1,323,987. Patented Dee. 2,1919.

awe/whoa Charles H6 6591'.

33 I t I Mow/M141 UNITED STATES CHARLES KELLER, oEEAu CLAIRE, WISCONSIN.

STUD-BOLT WRENCH.

To all whom it may concern:

Be it known that 1, CHARLES KELLER, a citizen of the United States,residing at Eau Claire, in the county of Eau Claire and State ofWisconsin, have invented certain new and useful Improvements inStud-Bolt Wrenches, of which the following is a specification. I

This invention relates to wrenches designed for performing specialoperations, and has for one of its objects to improve the constructionand increase the efliciency and utility of devices of this character.

Another object of the invention is to provide a simply constructedimplement adapted more particularly for removing and inserting threadedmembers which are constructed without ordinary wrench receiving portionsand commonly lmown as studs, and without injury to the studs.

Another object of the invention is to provide an implement of' thischaracter which may be readily adapted without material structuralchange to threaded members of various sizes.

With these and other objects in view, the invention consists in certainnovel features of construction, as hereinafter shown and described andthen specifically pointed out in'the claims, and in the drawingsillustrative of the preferred embodiment of the invention Figure 1 is aside elevation of the improved implement partly in section ready to beapplied to a threaded stud, Fig. 2 isan enlarged side elevation of thestud engaging end of the operating member,

Fig, 3 is a transverse section on the line 3-3 of Fig. 2,

Figs. 4 and 5 are plan views of the head portion of the improvedimplement illustrating its adaptability to studs of various sizes. I

The improved implement comprises a head portion 10 having sockets 1112extending -therethrough cutting one into the other whereby the socketsare caused to communicate at one point as shown at 13. The socket 12 isdesigned to engage over a threaded member, such as a stud bolt 14, thelatter being shown by way of illustration threaded in an eccentric strap15. The improved deviee may be readily adapted to threaded members orstuds of various sizes.

Specification of Letters Patent.

- Patented Dec. 2, 1919.

Application filed July 11, 1918. Serial No. 244,471.

-'The other socket 11 is designed to receive 16, the latter having alongitudinally directed cavity in one face as shown at 17 in Figs 2 and3.

The cavity 17 is preferably in the form of'the segment of a circle ofthe same diameter as the thread of the stud, so that knifeedgedportions, or teeth 18 are produced at the junctures of the edges of thecavity and the outer surface of the portion of the turning member whichis inserted in the socket 11. p v p By this arrangement the recessedportion of the turning or operating member 16 may be inserted into thesocket 11, before or after the member 10 has been disposed overth'e'stud 14, with the cavity 17 disposed opposite the communicatingopening 13; The cavity 17 may likewise be of greater depth thansufficient to form a segment cor responding to the diameter of the stud,as will be obvious. After the parts are'coupled as above noted if awrench or similar tool is applied to the member 16 and rotated, theknife edges or teeth 17 will grip the threads on the stud and lock themember 10 in engagement therewith so that continued rotation of thewrench will thread the stud into or remove said stud from the body 15,according to the direction of rotation of said wrench. 1 V

The member 16 is extended longitudinally .and terminates in a wrenchreceiving head plement applied to the head 19 will cause the member 10to be rotated around the socket in the member 15 which receives thestud. The operation of inserting or removing the stud is thusfacilitated and the stud removed or inserted without injury thereto. Alltendency of the stud to bend when the operating member is applied isalso obviated as the center of the head 19 is in alinement with thecenter of the socket 12. It will be noted that the head 10 is reversiblewhile the sockets 11 and 12 open through the opposite fiat ends thereofso as to permit the headto be positioned on a threaded stud from eitherend of the head and also permit the operating tool to be inserted in itsreceiving socket the stud-receiving socket opening through the oppositeflat ends of the head, the latter 2. An implement for may be readilyslipped over a threaded stud and positioned thereon at any desiredpoint" in the length thereof so as to secure a good grip on the studwhen removingthe same.

A plurality of the members 10 will be furnished having the sockets 12formed in various sizes to adapt the device to various sizes of studs,but one only of the operating 'members will be required for all of thehead members 10 which are furnished.

- The member 16 will be of tempered steel-so that it will effectuallygrip the threads of the stud without injury to the teeth 18. V

c Having thus described, the invention, .What is claimed as newis: v

1. An implement for inserting and removing studs including a reversiblehead having communicating sockets each opening through the opposite endsthereof, one of said sockets being adapted to receive a stud from eitherend of said head, and a separate operating tool independent of the headand insertible "in the other, socket froml either end of said head andprovided with means adapted to gri the stud when the tool is rotated. VV

inserting and removing studs including a plurality of reversi-' bleheads each provided with flat oppositely disposed ends and havingcommunicating sockets formed therein and opening through the oppositeflat ends thereof, one of the sockets of each head being adapted toreceive an operating tool and the other a stud from either end of thehead, the tool-receiving sockets of the different heads being all of thesame size and the stud-receiving sockets of said heads being ofdifferent sizes, and

an operating tool common to all of the heads and including a portionadapted to enter the tool-receiving socket of any one of the 4 5 headsand grip thestud when the tool is retated- 1 3. An implement forinserting and removing studs including a head having communieatingsockets formed therein and each opening through the opposite endsthereof, one of said sockets being adapted to fit over the grip thestud, said member being provided with a shank disposed in the samelongitudinal plane With the teeth. and having its intermediate portionoffset and its terminal provided with a wrench-engaging head disposed inalinement with the first-mentioned socket. I

4. An implement for inserting and removing studs including a reversiblehead having communicating sockets each opening through the opposite endsthereof, one of which is 7 adapted to receive the stud to be removed,and an operating member independent of and freely separable from thehead for rotating said head, said operating member including a portionadapted to enter the other socket from either endof the head andprovidedwith means adaptedto bear directly against and grip thestud andlock said stud in engagement with the head when said member is rotated.1 y f 5. An implement for inserting and removing studs including aone-piece head having communicating sockets formed therein and eachopening through the opposite ends thereof, one of said sockets beingadapted to receive the stud to be removed and a separate operatingmember independent of the head for rotating .said' head and including aportion adapted to enter the other socket from either end of the headand provided v In testimony whereof I afiix my signature. 7 v 7 CHARLESKELLER. as

